I will repeat myself, over and over again until irresponsible pet owners realise that their beloved four-legged pals must not be left alone inside the car, especially this summer. The temperature can go high during mid-day and a closed vehicle is like an oven. Your pets will get fried! Don’t do that!
I attached this picture I have seen from metapicture.com. It is a considerate way to care for your pet while you have to run errands. Although, the picture is cute;I am still not comfortable with the idea of leaving your precious pet unattended and exposed to the harsh elements. Then again, this is only okay if you have a pick-up truck. What if you don’t?
So, if you have to run an errand and there is no one to watch over your pet, maybe you can leave him/her to a pet sitter or ask a neighbor to watch until you get back. I think, that is the best thing to do under the circumstances.